Heater.



PATENTED AUG. 14, 1906.

0., N. ANDERSON.

HEATER.

APPLICATION FILED MAY28, 1904.

2 SHEETSSHBET 1.

UNITED @TATES PATENT orrioa.

Specification of Letters Patent.

Patented Aug. 14. 1906.,

Application filed May 28, 1904. Serial No. 210,297.

.-To all whom it may concern:

.Be it known that I, OLIVER N. ANDERSON, a citizen of the United States,-residing at Lancaster, in. the county ofLancas'ter and State of Pennsylvania, have invented certain new and useful Im rovements in Heaters; and I do hereb deciare the following to be a full, clear, an exact description of the incombustion-chamber and having at the center of its top a smoke-escaping aperture opening into a pipe or flue and having arranged within said drum'a specially-con StI CtBd body adapted to be raised or'lowere i The object of the invention is the construction of a heater in which the products of combustionsmoke and gasare allowed to escape by compressing them into and through a narrow surrounding ring in their passage to the smoke-outlet, forcing them a ainst the .inner surface of the wall of the rum, and thereby measurably increasing the radiating property thereof or enabling said wall to throw out a greater degree of heat.

The elements of the invention will severally and at large appear in the following description, and they will be separately or combinedly set forth or pointed out in the appended claim. a

The purposes of the invention are attaine by the devices and means illustrated in the accom anying drawings, with similar reference c aracters to designate similar or like parts throughout the several views, in which Figure 1 is a front elevation of a heater I the top as it appears when detached from Fig. 3 with the broken-away side restored; Fig. 5, a top viewof the suspended body as 5 5 it appears when detached from Fig.2 and completed, and Fig. 6 an inverted view of Fig. 5.

in its external contour and In the drawings the numeral 1. designates a usual or well-known fire pot or box arranged on anordinary base 2, with the-lower ortion thereof broken away. In the base is situated the usual ash-pit 3, while in the bottom of the fire-pot is arranged an ordinary rotatable grate 4, which supports the fire to furnish the required heat.

The specially-constructed drum A of the invention consists, preferably, of an upwardly and outwardly flaring base proved dimensions, open at oth ends, with its smaller or lower end seated onto the upper end of the fire-pot 1 and its larger or upper end u wardly extending, onto which end is seate the lower end of an upwardly and inwardly sloping shell (1, bein slightly conical aving itsupper end closed by a slightly-depressed conlcal top a provided at its apex with a smoke exit aperture opening into a pipe or conduit leading to a smoke flue or stack, (not shown,) and the under surface of the top is provided with a series of concentric ring-walls a about said smoke-exit aperture to aid in baffling the flow of the combustionproduct in its passage to said smoke-outlet, while through. the center of the smoke-exit aperture said top is provided with a cross-strip o havin at its center a uide-oriiice through whie passes a suspen ing and adjusting rod, yet to be described, and axially above said orifice in the top wall of said smoke-conduit is arranged a boss it, having at its center an internally-screw-threaded orifice through which said suspending-rod is lowered or raised, as may be required to adjust. the draft,or heat controlling device suspended by said rod within the drum, both the device and its adjustment to be hereinafter described.

portion a of ap- The shell a of the-drum, in the upper portion.

Within the body of the drum, in the upper portion thereof, is arranged a heat-control- IOC ng or draft-regulating body B, com osed of an inverted cone 6 and a flattene or depressed but upright cone 1), with their; bases of less diameter than is that of the drum at this point, said bases being laced together.

and rigidly secured, as by eaded bolts b top of t seems passed therethrough and by nuts screwed ome on the threaded ends of the bolts, the

, slant surface of the cone 1) making angles of practically forty-five degrees 0 )ening with reference to its base, while the slant surface of the cone 6 lies in lines practically parallel to that of the conical top a before mentioned, the apex ofthe cone b being the required distance above the fire- 0t and the a ex of the cone 1) surrounded by a boss I), t ough the center of which is secured the lower end of a rod B, having adj acent-to its upper end an external screw-thread Z), engagingthescrew-t'hread of the boss (1 also be ore mentioned, and to the upper extremity of the rod is rigidly secured the central hub of ahand-wheel B to rotate said rod,

lowering or raisin the suspended body B,

and thereby regu ating or controlling the flow of smoke or gas through to the smokeoutlet, while around the oined bases of said cones there is formed an open ring or space 6 for the passage of said smoke or gas. On

e slant surface of said cone 1) are erected a series of concentric ring-walls b", similar but oppositely disposed to the ringwalls a before mentioned and with which they alternately intermesh, rendering com pletely tortuous under certain conditions the smoke-passage thereover and through to the smoke-outlet,said bodyB being filled with any suitable non heat conducting substance such as mineral woobb, sheet asbestos, or ashespreventingmeasurablythe absor tion of heat. Of course this result will on y be obtained after the filling matter within the sus ended body B shall have become thor ou ly heated.

ow the several elements hereinbefore described and occupying the respective positions indicated in the drawings, with the tongues of flame from the fuel in the fire-pot producing the combustion product, gas, and smoke, sendin said product or the gas and smoke u war throughout the area or space within t e drum against the slant surface of the cone suspended therein, forcing it into the u wardly-narrowing angular space surroun ing-the cone to the narrow r1ng-space b therethrough and into and through the tortuous passage-way to the smoke-exit aperture therethrough and into the smoke pipe or conduit, as indicated by arrows, the fol lowing observations will be noted: that the product of combustion in its upward flow by contacting with the slant surface of the inverted cone will be diverted outward against the inner surface of the shell (1 of the drum,v

imparting heat thereto; that said product in its upward flow is gradually compressed as it progresses into the upwardly-narrowing angular space to said ring-space b, said coml i pression bGOOJIllIlg greatest VillBll said ring space is reached; that this gradual compress sion of said combustion product proportionately intensifies the heat contained therein,

said intensification becoming greatest where said compression is greatest, being at said. ring-space 5 that during this upward flow of said product by reason of said intensified heat a measurable portion of the gas is consumed therefrom; that the narrow ring 'siace b o enin into the tortuous assa eway to the smoke-exit, checks the free pas sage of said flow therethrough, but it does not revent the escape of unconsumed gas or smolie; that lowering the suspended body B by means of the hand-wheel B and the rod B widens said ring-space b and reduces the tortuous passage-way, and that lowering said body B until the ring-walls a and 7) and desired to be secured by LettersPatent,

In a heater, in combination, a fire-pot mounted on a base; a practicallycylindrical .drum mounted on said firepot, said d um having a closed top with a smoke-exit aperture at the center thereof, a smoke-conduit extending from said aperture, and aplurah ity of concentric ring-walls arranged arounc said a erture and projecting downwardly fromthe under surface of said top; a non-- heat-conducting body arranged within said drum in the upper portion thereof, said body having a conical under surface, and a closed 'top practically parallel to said first-mew tioned top, with a plurality of concentric ring-walls projecting upwardly from. its upper surface and spaced to alternately intermesh with said former ring-walls, and a ring space surrounding the upper .end of said body where its diameter is greatest, with a screw threaded rotatable whereby the body is suspended, lowered, and raised, substantially as described and for the purpose hereinbefore set forth.

In testimony whereof I affix my signature in n'esence of two witnesses.

OLIVER N. ANDERSON. Witnesses DANL. ll. llama, CHAS. E. Lone rod provided 

